OF

FELLOWS OF THE GEOLOGICAL SOCIETY OF LONDON.

EVERY Candidate for admission as a Fellow must be proposed by three or more Fellows, who must sign a Certificate in his favour. The proposer whose name stands first upon the certificate must have a personal knowledge of the Candidate.

Fellows on election pay an Admission Fee of Six Guineas. The Annual Contribution paid by Fellows is Two Guineas, due on the 1st of January in every year, and payable in advance; but Fellows elected after the month of February are subject only to a proportionate part of the Contribution for the year in which they are elected; and Fellows elected in November or December pay no Contribution for the current year. The Annual Contribution may at any time be compounded for by a payment of Thirty Guineas.

The Fellows are entitled to receive gratuitously all the volumes or parts of volumes of the Quarterly Journal of the Society that may be published after their election, so long as their Annual Contributions are paid; and they may purchase any of the publications of the Society at a reduction of 25 per cent. under the selling prices.

The Library is open daily to the Fellows between the hours of 10 and 5, and on Meeting days from 7 to 8 P.M. Under certain restrictions Fellows are allowed to borrow books from the Library.

Publications to be had of the Geological Society, Burlington House.

QUARTERLY JOURNAL. (Vols. III. to XXXVI. inclusive.)

Price to Fellows, 13s. 6d. each (Vols. XV., XXIII., XXX., and XXXIV. to XXXVI.

16s. 6d.), in cloth.

CLASSIFIED INDEX TO THE TRANSACTIONS, JOURNAL, &c., by G. W. ORMEROD, Esq. New Edition, to the end of 1868, with Supplement to the end of 1875. Price 5s. 6d. To Fellows, 3s. 6d. [Postage, 5d.]The SUPPLEMENT alone, including publications from 1869 to the end of 1875. Price 18. 6d. To Fellows 1s. [Postage 1d.]

GEOLOGICAL MAP OF ENGLAND AND WALES, in 6 Sheets, by G. B. GREENOUGH, Esq. New and Revised Edition. Price to Fellows, in sheets, £2 2s. Single sheets may be purchased at the following prices:-No. 1, 4s. 6d.; No. 2, 3s. 6d.; No. 3, 10s. 6d. No. 4, 8s. Od.; No. 5, 12s. Od.; No. 6, 7s. 6d. Index to colours, 9d.

THE GEOLOGY OF NEW ZEALAND.

Translated by Dr. C. F. FISCHER, from the works of MM. HOCHSTETTER and PETERMANN. With an Atlas of Six Maps.

Fellows may purchase one copy of this book at Two Shillings; additional copies will be charged Four Shillings.

CATALOGUE OF THE LIBRARY.

The Catalogue of the Books in the Society's Library is now ready. It forms a volume of over 600 pages; and is issued to Fellows at Five Shillings per copy. (Postage Ninepence.)

Page

Proceedings of the Geological Society, 1880-81

..... 237

Mr. F. D. Longe on some Specimens of Diastopora and Stomatopora from the Wenlock Limestone (Abstract)

PAPERS READ.

24. Mr. A. W. Waters on Fossil Chilostomatous Bryozoa from South-west Victoria, Australia. (Plates XIV.-XVIII.)

25. Dr. R. W. Coppinger on Soil-cap Motion

26. Mr. D. Mackintosh on the precise Mode of Accumulation and Derivation of the Moel-Tryfan Shelly Deposits, on similar high-level Deposits along the Eastern Slopes of the Welsh Mountains, and on Drift-zones...

239

309

348

351

27. Mr. C. Parkinson on the Upper Greensand and Chloritic Marl of the Isle of Wight

370

28. Mr. E. W. Willett on a Mammalian Jaw from the Purbeck Beds at Swanage, Dorset. With an Introduction by Mr. H. Willett, F.G.S.

376

29. Mr. G. R. Vine on the Family Diastoporide, Busk. Species from the Lias and Oolite. (Plate XIX.).

381

30. Mr. F. Rutley on the Vitreous Rocks of Montana, U.S.A. With an Appendix by Mr. James Eccles, F.G.S. (Plate XX.).

391

31. Mr. F. Rutley on the Devitrified Rocks from Beddgelert and Snowdon, and on the Eruptive Rocks of Skomer Island. (Plate XXI.) 32. Mr. J. W. Davis on the Fish-remains of the Bone-bed at Aust, near Bristol. (Plate XXII.)

403

414

33. Mr. J. W. Davis on Anodontacanthus, a new Genus of fossil Fishes from the Coal-measures. (Plate XXII.)..

427

34. Rev. P. B. Brodie on certain Quartzite and Sandstone Fossiliferous Pebbles in the Drift in Warwickshire

430

35. Mr. T. Mellard Reade on the Date of the last Change of Level in Lancashire... 436 36. Prof. W. J. Sollas on a new Species of Plesiosaurus (P. Conybeari) from the Lower Lias of Charmouth, with observations on P. megacephalus, Stutchb., and P. brachycephalus, Owen. With a Supplement by Mr. G. F. Whidborne, F.G.S. (Plates XXIII., XXIV.)....

37. Dr. H. Hicks on the Discovery of some Remains of Plants at the Base of the Denbighshire Grits, near Corwen, North Wales. With an Appendix by Mr. R. Etheridge, F.R.S., Pres.G.S. (Plate XXV.).

[No. 148 will be published on the 1st of next November.]

440

482

[The Editor of the Quarterly Journal is directed to make it known to the Public, that the Authors alone are responsible for the facts and opinions contained in their respective Papers.]

**The Council request that all communications intended for publication by the Society shall be clearly and legibly written on one side of the paper only, with proper references, and in all respects in fit condition for being at once placed in the Printer's hands. Unless this is done it will be in the discretion of the Officers to return the communication to the author for revision.

The Library and Museum at the Apartments of the Society are open every Day from Ten o'clock until Five, except during the first two weeks in the month of September, when the Library will be closed for the purpose of cleaning.

Warington W. Smyth, Esq., M.A., F.R.S. | J. Gwyn Jeffreys, Esq., LL.D., F.R.S.

EVENING MEETINGS OF THE GEOLOGICAL SOCIETY,
TO BE HELD AT BURLINGTON HOUSE.

February (Anniversary, Feb. 17) 8, 22

[Business will commence at Eight o' Clock precisely each Evening.]

The Library and Museum at the Apartments of the Society are open every Day,

from Ten o'clock until Five.